PURPOSE: A niche evaluation model generation method and a technical field evaluation method are provided to easily find a niche technical field candidate by performing a niche area discovery simulation. CONSTITUTION: A document combination dividing module(5210) divides a sample document combination into a first part sample document combination and a second part sample document combination. A niche discovery simulation module(5320) creates a division obtain document combination by dividing a obtain document combination. The niche discovery simulation module creates a niche evaluation value according to the division obtain document combination. The niche discovery simulation module assorts the division obtain document combination in which the niche evaluation value is over or is over a fixed rank.
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